I think it's better if you email him. There's a magnet on the bass QR once you disengage it the light turns on. The question is can the light be turn off if you use the clip? I'm guessing you can turn it off with a twist like the beta.
From the description: Magnetic activation: Simply pull the Beta Magnetic off the QR and you get light. Put it back on the QR and the light shuts off. You can also untwist the head a 1/4 turn to shut off the light...just like any twisty light.